Improvement in permutation-locks



to am i following is aspecication.

e accomplishthis purpose.

A dog-lever to drop `inbehind"the yoke A.

"IJA'CoBj CBEENESSER, 0E CINCINNATI, CHIC, AssIeNoE To CHARLES uDiE-eoLDLAND JACOB AKIENZLE, or s AnE PLACE. m

A Letters raient No. 115,231, dated May 23, 1871. l

` l IMPROVEMENT IN .PERMoTArIoN-'LocKs.

` i The Schedule` referred to in these Letters Patent and making part of the same.

I, MJOB4 OBssEm'of Cincinnati, `in the county `of Hamilton andStatepf Ohio, have invented certain p Improvementsjin Permu tation-Locks, of which the `The object of myinvention is an Yimproved mode'oil suspending the dog without supporting it on the come binaton-wheels. i

`As is nowgenerallyfwell known, any construction of a Vpermutation-lock".wherein the dog rests on the `perpheryfof' thel oolnbinationwhecls until thecorn- 5 1 binaton is formed-which permits theAdogto enter the `notches in" said wheels" `,is faulty, for the reason that f such construction andiarrangernent serve to facilitate the pickingof the lock, as, by the employment of a micrometer the relative A position of :the combinationwheels may `be'determined. e

This defect has invoked'the inventive powers of e mechanicsand jothersfor its removahand a number` ot'A ingenious A devices "has been invented designed to i Experience thas'` shown A that my invention removes p this defect, and. byAaiidevice that' is simple, durable, `and inexpensive. A A

, Description the'lccontpanytg Drawing. Figure lfisan elevation of a permutationdock ein- A bodyingmy invention, with-the back plate of the easing removed, and showing the relative position of the different partsfofAthe lock when open.l i

Figure 2 Ais a,siinilarAelevatiomrbut shows the rela- A tive position of the Apartswhen shut.

` Egure 3,representsajportion of the works of" the `or arbor F, and.has-"apin,V V, passing through the' andwbicbservesfto retainwthe disks B and O in the l same relative position on j the arbor, the disk `O being attached to the `arboriifnfthe usual manner.

Back offthe disk Bhthereis placed the washer or i nut W, serewedAon the arbor, which serves to ke'ep A Athe washenAX inplace',"a`ndis made of such thickness' Has to separatethedisks B and C so as to permit the D isa projecting ,yAortlug cast on the face of the diskrO, as shown inthe drawing.

` E isthedog-leve1,.pivoted to the plate 4lEI at Y. e

as the plate H is drawn backward or pushed forward. 4

A M M are the jaws orfbolts, andare separately -sleeved on the stump L.

. These jaws have pins P l?, working inslots, as shown in the drawing.

R is a hook on the dog-lever. U is a stop attached to the loek-case, and against which' the shoulder T of the dog-lever rests when raised out of the notches of the combinatiou-wheels.

The combination-wheels may be of any usual construction.

From the foregoing deseriptionof specific parts thel operation of this lock will be readily understood,

When the combination is set and the wheels are brought to the proper relative position the dog drops into the'uotches, the doglever passes down behind the yoke A and the pin or fly Z on thelever passes belojiv the tongue S.4 The arbor being still gently turned to the right, the lug D engages the hook R and draws thefdog-lever back, and H, which opens the jaws M, and the lock is now open.

The lock being open, to lock it turn the arbor to the left; the lug D'now pushes the plate H forward, and the jaws are closed; and still turning to the left, the incline on the disk C engages the back ofthe hook R, and at the .proper-time .raises the dog-lever to its elevated position, and the pin or fly Zpasses above and rests upon the tongue S, and thus holds the lever in its elevated position without permitting the dog to' rest on the combination-wheels except for the moment of time that the fly Z passes beyond the point oi' the tongue St 0 latins.

I claim as my invention:-

1. The combination of the yoke A, constructed with Witnessesz` S. S. MORRIS, e J. 4O. HINTZ. Jr.

ith it the plate 

